Diagnostic Différentiel des Hypomélanoses chez les enfants

Differential diagnosis of hypomelanoses in children (N. Van Geel (Ghent, Belgium)) Use a stepwise approach step 1 history congenital or acquired stable or progressive other medical problems family history step 2 clinical examination localisation (Woods light important especially in the localized form) number of lesions pattern (linear blaschkoid, segmental) hypomelanosis or amelanosis other problems (neurological, …

Troubles pigmentaires de la peau pendant la grossesse

Pigmentary disorders of the skin during pregnancy (S. Vaughan Jones). melasma: types centrofacial malar mandbular histology epidermal (72% of cases) dermal (13%) Mixed in 5% occurs in 50-70% of pregnant women Hyperpigmentations: Mucosa (Vulval Melanosis), Areola, Axilla Linea Nigra Pigmentary Demarcation Lines (Voigt or Futcher’s lines) Darkening of Moles: there is a higher dermal proliferation…

Troubles des annexes (poils…): Acné et modifications des cheveux

Appendage abnormalities: Acne and Hair Changes (C. Ambros Rodolph). During Pregnancy some skin conditions are more frequent: Specific Dermatosis: The 2 most frequent are: atopic eruption of pregnancy( 41%) polymorphic urticarial papules and plaques of pregnancy  (PURPP) Non specific dermatoses account for 40% of causes:  of these one third of each are inflammatory and infectious…

Un rappel des différentes cibles des hormones sur la peau

A review about the hormonal targets of the skin (B.Soutou). pregnancy is divided into 3 phases. fertilization to implantation (1st week) organogenesis Maturation of organs after the corpus luteum is activated it is implicated in the following: synthesis of progesterone, others: estradiol, 17 hydroxyprogesterone, relaxin placenta synthesizes Sp1m PAPP-A,  peptides and steroids the skin is…